RTL 8822BE无线驱动故障求助：Kernel 4.14下按方法操作遇阻

Hey there, let’s work through this RTL8822BE wireless problem together—those Realtek drivers can be tricky on older kernels like 4.14, especially on HP laptops. Here are some actionable fixes to try, since the solution you attempted hit a snag:

1. Reinstall a Kernel-Compatible Driver #

The stock kernel 4.14 has limited support for RTL8822BE, so let’s use a well-maintained community driver tailored for this chipset:

• First, clean up any broken driver installations:

  sudo apt purge rtl8822be-dkms
  sudo modprobe -r rtl8822be
  

• Install dependencies and clone the trusted driver repository:

  sudo apt install git build-essential dkms linux-headers-$(uname -r)
  git clone https://github.com/lwfinger/rtlwifi_new.git
  cd rtlwifi_new
  git checkout origin/rtl8822be
  

• Build and install the driver via DKMS:

  sudo dkms add .
  sudo dkms install rtlwifi-new/0.6
  sudo modprobe rtl8822be
  

2. Tweak Antenna Settings for HP Envy ae000 #

Many HP Envy models have antenna configuration quirks that cause connectivity issues. Try switching the active antenna:

• Test the setting temporarily:

  sudo modprobe rtl8822be ant_sel=2
  

  If this fixes your problem (better signal, stable connection), make it permanent:

  echo "options rtl8822be ant_sel=2" | sudo tee /etc/modprobe.d/rtl8822be.conf
  

  Note: If ant_sel=2 doesn’t work, try ant_sel=1 instead.

3. Fix Compilation/Installation Errors #

If you ran into issues during the driver build step, double-check these:

• Ensure you have the exact kernel headers for your 4.14 kernel:

  sudo apt install linux-headers-$(uname -r)
  

• Clean up old DKMS artifacts and retry the install:

  sudo dkms remove rtlwifi-new/0.6 --all
  cd rtlwifi_new
  sudo dkms add .
  sudo dkms install rtlwifi-new/0.6
  

4. Upgrade Kernel via HWE Stack (Alternative) #

If all else fails, upgrading your kernel using Ubuntu’s Hardware Enablement (HWE) stack can give you better RTL8822BE support:

sudo apt install --install-recommends linux-generic-hwe-16.04

Reboot your system after the upgrade—newer kernels (like 4.18+) have improved out-of-the-box support for this chipset.

If you’re still hitting errors, share the specific error messages (e.g., from dmesg or the DKMS build log) and we can narrow it down further!

内容的提问来源于stack exchange，提问作者Lui